i don't really face this problem cause i'm pomosexual with a primary focus on women, but the last time I was presented with the opportunity to suck a nigga's dick i went ahead and did it cause 1: i actually thought i liked this dude, 2: you shoulda seen his dick it was pretty, and 3: i got broke the hell off (so well, in fact, that i recall repeating the aforemention dicksucking).

now as far as female-to-female/male-to-female head, its generally safer to go down on a woman. especially if you're a man, you should feel very secure in knowing you'll be more than safe while eating out a woman–in order to catch a disease from her via cunnilingus, she'd have to actually have an orgasm. men are not very good at all when it comes to male-to-female head for some reason…